Heater control unit



FIG. 1 is a side elevational view of a heater control unit showing my new design;

FIG. 2 is a front elevational view thereof as taken from line 2--2 of FIG. 1;

FIG. 3 is a left end elevational view thereof as taken from line 3--3 of FIG. 2;

FIG. 4 is a right end elevational view thereof as taken from line 4--4 of FIG. 2;

FIG. 5 is an opposite side elevational view thereof as taken from line 5--5 of FIG. 2;

FIG. 6 is a rear elevational view thereof as taken from line 6--6 of FIG. 5. 

The ornamental design for a heater control unit, as shown and described. 